Sink



FIG. 1 is a top perspective view of a sink, according to the new design.

FIG. 2 is a top view of the sink, according to the new design.

FIG. 3 is a bottom view of the sink, according to the new design.

FIG. 4 is a front view of the sink, according to the new design.

FIG. 5 is a rear view of the sink, according to the new design.

FIG. 6 is a right side view of the sink, according to the new design; and,

FIG. 7 is a left side view of the sink, according to the new design. 

CLAIM I claim the ornamental design for a sink, as shown and described. 